Merge branch 'master' into jgrpp

# Conflicts:
#	.github/workflows/ci-build.yml
#	.github/workflows/release-linux.yml
#	.github/workflows/release-macos.yml
#	.github/workflows/release-source.yml
#	.github/workflows/release.yml
#	CMakeLists.txt
#	COMPILING.md
#	src/ai/ai_core.cpp
#	src/ai/ai_gui.cpp
#	src/bridge_gui.cpp
#	src/company_gui.cpp
#	src/console_cmds.cpp
#	src/core/CMakeLists.txt
#	src/core/smallmap_type.hpp
#	src/disaster_vehicle.h
#	src/effectvehicle_base.h
#	src/fontcache.cpp
#	src/game/game_core.cpp
#	src/game/game_gui.cpp
#	src/gamelog.cpp
#	src/gamelog_internal.h
#	src/group_gui.cpp
#	src/linkgraph/linkgraph.h
#	src/misc.cpp
#	src/network/core/config.h
#	src/network/core/udp.cpp
#	src/network/network_chat_gui.cpp
#	src/network/network_content_gui.cpp
#	src/network/network_gui.cpp
#	src/newgrf.cpp
#	src/newgrf_gui.cpp
#	src/newgrf_profiling.cpp
#	src/newgrf_profiling.h
#	src/object_gui.cpp
#	src/openttd.cpp
#	src/openttd.h
#	src/order_gui.cpp
#	src/os/windows/font_win32.cpp
#	src/rail_gui.cpp
#	src/road.cpp
#	src/road_gui.cpp
#	src/saveload/afterload.cpp
#	src/saveload/saveload.h
#	src/script/api/script_controller.cpp
#	src/script/api/script_roadtypelist.cpp
#	src/script/script_config.cpp
#	src/script/script_config.hpp
#	src/script/script_instance.cpp
#	src/script/script_scanner.cpp
#	src/script/squirrel.cpp
#	src/script/squirrel_helper.hpp
#	src/settings_gui.cpp
#	src/settings_internal.h
#	src/settings_type.h
#	src/table/settings/network_private_settings.ini
#	src/timetable_gui.cpp
#	src/vehicle.cpp
#	src/vehicle_base.h
#	src/window_gui.h

src/order_gui.cpp

@@ -1501,14 +1501,11 @@ private:
 	 */
 	VehicleOrderID GetOrderFromPt(int y)
 	{
-		NWidgetBase *nwid = this->GetWidget<NWidgetBase>(WID_O_ORDER_LIST);
-		int sel = (y - nwid->pos_y - WidgetDimensions::scaled.framerect.top) / nwid->resize_y; // Selected line in the WID_O_ORDER_LIST panel.
-
-		if ((uint)sel >= this->vscroll->GetCapacity()) return INVALID_VEH_ORDER_ID;
-
-		sel += this->vscroll->GetPosition();
-
-		return (sel <= vehicle->GetNumOrders() && sel >= 0) ? sel : INVALID_VEH_ORDER_ID;
+		int sel = this->vscroll->GetScrolledRowFromWidget(y, this, WID_O_ORDER_LIST, WidgetDimensions::scaled.framerect.top);
+		if (sel == INT_MAX) return INVALID_VEH_ORDER_ID;
+		/* One past the orders is the 'End of Orders' line. */
+		assert(IsInsideBS(sel, 0, vehicle->GetNumOrders() + 1));
+		return sel;
 	}
 
 	/**